Hub cap for disk wheels



K. E. RADA.

HUB CAP FOR D ISKM 'I HEELS. APPLICATION FILED DECHZO 1921.

1,41,5G6, Patented Mar. 21, 1922.

KAREL E. RADA, OF

OAK PARK, ILLINOIS.

HUB CAP FOR DISK WHEELS.

Specification of Letters Patent.

Patented Mar. 21, 1922.

Application filed December 20, 1921. Serial No. 523,674.

To all whom it may concern:

Be it known that I, KAREL E. RADA, a citizen of the United States, residing at Oak Park, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Hub Caps for Disk Wheels, of which the following is a specification.

My invention relates to caps for the hubs of disk wheels.

The object' of the invention is to provide a simple and efiicient cap having locking lugs adapted-to engage slots in the disk at opposite sides of the axle eye or hub to lock the cap securely in place.

. This object I accomplish by the construction shown in the acco panying drawing, in which:

Fig. 1 is a side elevation of an ordinary metallic disk wheel with the cap in place.

Fig. 2 is a transverse sectional v1ew on line 2-2 of Fig. 3 through the wheel with my improved cap in the position it occupies before being turned to lock it.

Fig. 3 is an enlarged side elevation of the central ortion of the wheel, the cap belng 1n dotted lines.

Fig. 4 is a perspective of the cap.

The wheel 1 is formed as usual of two dished disks 2, 3, the central or hub forming portions of which are connected by a thimble 4 upset at its ends against the outer faces of the disks and the disks are secured together near their peripheries, as at 5. The peripheries of the disks are formed with mating half channels 6 which receive the usual rubber tire 7.-- These wheels are enameled in practice and are used on various small articles that are desirable to move readily from place to place.

In order to cover the ends of the axles and the wheel retaining device thereon, such as a cotter pin, or nut not shown, I provide a cap 10 having formed integral therewith a plurality of locking lugs 11, projecting forwardly from its inner circular edge and thence laterally, as at 12. The cap is struck up from sheet. metal and is formed at its center with a nut-like lprojection 13 adapted he outer disk 2 of the wheel is provided atoppl site sides of the axle opening or eye wit slots 14 for engagement by the lugs 11 and their laterally projecting ends 12. One end of one slot 14 has an enlarged recess -15 and the correto receive a wrench.

,sp'onding end of the other slot 14 has a similar recess 15 so that when the cap is held with its lugs 11 in register with these recesses l5 the lugs will enter the same, and then by rotatlng the cap by means of its nut 13 the pro ections 12 on lugs 11 will engage the inner face of the disk 2; the lugs 11 then engag ng the outer walls 16 of slots 14 which are slightly inclined so as to cause a slight compression towards each other of the lugs i 11 until they reach the opposite ends of the slots 14. The ends of slots 14 opposite their recesses 15 are provided with catch-forming recesses 17 into which the lugs 11 will s ring into locking engagement so as to hol the cap securely against accidental displacement; these recesses 17 being a less distance apart than the distance from the outer end of one projection 12 to the outer end of the other projection 12 diametrically of the cap. Thus when the lugs 11 reach the locking recesses 17 they Wlll spring outwardly and the lateral ends or projections will underlie the inner face of the disk 2.

It will be seen, therefore, that I have provided a very simple hub cap and one that may be readily removed and yet be perfectly secure against accidental removal.

urthermore, the lugs and slots will cause the cap to snugly engage the outer face of the wheel and prevent the entrance of dust.

What I claim is:

1. The combination with a sheet metal disk wheel having a central axle eye, and slots extending through the disk at op osite sides of the eye, of a hollow cap to incl bse the eye provided on its inner edge with looking lugs to extend throughthe slots into lockin engagement with the inner face of the (fisk.

2. The combination with a sheet metal disk wheel having a central eye and slots extending through the disk at opposite sides of the eye, ed at one end of each slot cess at the other end, of vided on its edge with ing lugs having and a locking rea hollow cap proforwardly pro ectlateral extensions adapted to pass throug the receiving recesses and then by rotating the nut ride along the slots and spring outwardly in the said locking recess.

3. The combination. with a sheet metal diskwheel having a central eye and slots extending through the disk at opposite sides ofsaid eye; one end of each slot having a receiving recess and the outer walls of said slots being inclined and terminating in look-- a lug receiving recess being form-- ing recesses, of a hollow sheet metal cap having forwardly and outwardly extending locking in adapted to enter said receiving recesses, ride along the said inclined walls and then spring into the locking recesses.

4. The combination with a sheet metal disk wheel having a central axle eye and locking slots at opposite sides thereof, of

. a hollow cap having forwardly and laterally projecting locking lugs to pass through said slots and engage the inner face of said disk;

the outer face of the cap being formed with a nut-forming projection.

5. The combination with a sheet metal disk wheel having a central axle eye, a cap engaging the outer face of the disk and inclosing the said eye, and interlocking securing means between the disk and inner edges of the cap to hold the cap in place.

6. The combination with a wheelhaving inclined slots extending through it and widened at corresponding ends; the other ends of the outer walls of the slots being notched or recessed, of' a hollow cap provided with forwardly and outwardly projecting hook-like lugs adapted to enter the KAREL E. RADA; 

